A2 meters tall person is located 5 meters from a camera lens (camera lens are convex lenses). the lens has a focal length of 35 millimeters. do not forget to convert millimeters to meters before subbing into the equation. find the distance where the image would appear.

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.